Fixed article i18n and a bug in URL

src/main/resources/content/language.properties

@@ -229,6 +229,11 @@ menu.report-an-issue=Report an issue
 menu.scm=Source code
 menu.translate=Translate Genesys
 
+article.edit-article=Editing article
+article.slug=Article slug (URL)
+article.title=Article title
+article.body=Article body
+
 activitypost=Activity post
 activitypost.add-new-post=Add new post
 activitypost.post-title=Post title

src/main/webapp/WEB-INF/jsp/content/article-edit.jsp

@@ -38,7 +38,7 @@
 		</div>
 
 		<input type="submit" value="<spring:message code="save"/>" class="btn btn-primary" />
-		<a href="<c:url value="${article.id ne null ? '/content/' + article.slug} : '/' }" />" class="btn btn-default">Cancel</a>
+		<a href="<c:url value="${article.id ne null ? '/content/'.concat(article.slug) : '/' }" />" class="btn btn-default">Cancel</a>
 	</form>
 
 	<script type="text/javascript">